Characteristics of Powder Alginate from Brown Algae Sargassum sp. on Time and Temperature of Maseration

Abstract

Sargassum sp. is an example of a brown algae plant that produces alginates in the form of an organic  polysaccharide polymer composed of two units of L-guluronic acid and D-mannuronic acid monomers.  The polymer is hydrophilic, that is, alginate is a linear molecule with a high molecular weight, so it is  easy to absorb water causing alginate compounds can be used as emulsifiers. This research aims to  know the effect of maceration time and temperature on the characteristics of alginate powder from  brown algae Sargassum sp. and determine the best maceration time and temperature to produce  alginate powder from brown algae Sargassum sp. This research used a Factorial Randomized Block  Design. The first factor is time (A) which consists of 3 levels, namely 1 hour, 2 hours and 3 hours. The  second factor is temperature (B) which consists of 3 levels namely 50°C,60°C,70°C. Each treatment  were grouped into 2 based on the time of implementation so that 18 units of the experiment were  obtained. The variables observed were the yield, water content, ash content, and viscosity. The data  obtained were then analyzed by variance analysis and continued using the HRD method (Honest Real  Difference). The results showed that the treatment of maceration time and temperature had a very  significant effect on the observed variables namely yield, moisture content, ash content, and viscosity.  The results showed that the treatment of 3 hours with a temperature of 70±1°C was the best treatment  to produce alginate powder from brown algae Sargassum sp. with yield characteristics 39.44±0.06 %,  water content 9.86±0.04 %, ash content 31.75±0.02 %, and viscosity value 19.00±1.41 cPs